Solve this:
25. Explain all the steps involved in formation of NaBr(s) from Na(s) and Br2(l) (
ii) Define lattice enthalpy and arrange the following in increasing order of lattice enthalpy.
(a) LiCl, CsCl, NaCl, KCI, RbCl
(b) AlF3, NaF, MgF2
(c) NaCl, MgO, MgCland LiCl

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Kindly post each question as a separate thread for better answering. Solving 1st part for you.

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i)Bonding molecular orbital has less energy and more stability compared to non bonding orbital.
ii)a )bond order=(10-6)/2=2
b)Paramagnetic nature due to the ptesence two singly occupied molecular orbitals
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